<template>
  <header class="header">
    <h1>todos</h1>
    <input id="toggle-all" class="toggle-all" type="checkbox" v-model="isAll">
    <label for="toggle-all"></label>
    <input
      class="new-todo"
      placeholder="输入任务名称-回车确认"
      autofocus
      v-model="task"
      @keydown.enter="enterFn"
    />
  </header>
</template>

<script>
export default {
  props:{
   list: Array
  },
  data() {
    return {
      task:'',
    }
  },
  methods:{
    enterFn(){
      this.$emit('addTask',this.task)
      this.task = ''
    }
  },
  computed:{
    isAll:{
      set(val){
       this.list.forEach(item => item.isDone = val)
      },
      get(){
        return this.list.length && this.list.every(item => item.isDone)
      }
    }
  }
}
</script>